Convex disc anti-skid device of collective doffing spinning frame

Abstract

The invention relates to mechanical equipment, in particular to a convex disc anti-skid device of a collective doffing spinning frame of textile machinery. The protruding disc anti-skid device comprises a protruding disc and protruding disc guide rails on the two sides of the protruding disc, an air cylinder is arranged below the protruding disc, an output shaft of the air cylinder is connected with a guide rod through a connecting block, a supporting claw is movably connected to the guide rod, protruding disc positioning grooves are formed in the protruding disc guide rails, protruding disc positioning plates are installed at the corresponding positions, and the protruding disc positioning plates are fixed to the protruding disc guide rails through installation plates. The convex disc positioning plate comprises a front baffle and a rear baffle, the front baffle and the rear baffle are tangent to the inclined side face of the convex disc, and the convex disc positioning plate is an elastic plate. Compared with the prior art, the device has the following beneficial effects that the convex disc is positioned in the running process of the convex disc, the phenomena that the convex disc slides forwards due to inertia and the convex disc moves backwards under the action of friction force of the supporting claws are effectively prevented, the centering precision of a spindle and an empty bobbin is improved, and the accuracy of exchange of the empty bobbin and a full bobbin during collective doffing is better facilitated.

Description

Technical Field

[0001] The invention relates to a mechanical device, in particular to a convex disc anti-slip device of a collective doffing spinning frame of a textile machinery. Background Art

[0002] The collective doffing spinning frame has become the main equipment in the spinning process of the textile machinery industry. The application of the collective doffing system on the spinning frame not only saves a lot of labor for the spinning process of the textile factory, but also reduces the doffing time and improves the equipment output. The collective doffing system is equipped with a set of convex discs under the spindles of the spinning frame equipment and at the corresponding position of the spindles. There is also a set of tube plugs between the convex discs and the spindles for intermediate storage tubes during doffing. The same yarn tubes can be inserted on the spindles, convex discs and tube plugs. When spinning, first insert a set of empty yarn tubes on the spindles, and insert a set of empty yarn tubes on the convex discs for standby use; when the yarn is full, the air frame first grabs the empty tubes on the convex discs and places them on the tube plugs in the middle storage position, then grabs all the full yarns at once and places them on the convex discs, and then inserts the empty yarn tubes on the middle tube plugs on the spindles to realize the exchange of full yarn tubes and empty yarn tubes. After the bobbin is exchanged, the main machine starts spinning, and the convex disc conveying system conveys the full yarn to the full yarn collection position, and at the same time, the empty bobbins in the tube sorting box are sorted and conveyed to the position corresponding to the spindle to wait for the next yarn drop. The full and empty bobbins are conveyed through the convex disc conveying system. The existing convex disc conveying methods mainly include cylinder-driven convex disc conveying method and steel belt conveying method. The cylinder pushes the cam conveying system to place cams under the spindles and at the corresponding positions of the spindles. At the same time, cams are also arranged at the front and rear of the car and at the turning points. The whole machine forms a ring. Cam guide rails are set on both sides of the cam, and guide rods are set under the cam. The claws are connected to the guide rods through the pins and can rotate around the pins within a certain range. There are grooves at the bottom of the cam. When in a free state, the front end of the claws tilts upward and presses in the groove at the bottom of the cam. The guide rod is connected to the cylinder shaft. When the cylinder shaft extends, the guide rod drives the claws to push the cam forward along the guide rails. The cylinder stroke is selected according to the equipment requirements, and one cam position, two cam positions or four cam positions are pushed forward at a time. Then, the cylinder shaft is retracted to push the next stroke. The cylinder shaft reciprocates until all the full yarns are transported to the collection position, and all the empty yarn tubes used for doffing are in place. The shortcomings of the existing cylinder-driven cam conveying system are mainly that the cam guide rails are mostly made of aluminum profiles or cold-rolled steel plates with smooth surfaces. When the cam moves forward under the push of the cylinder, due to inertia, when the cylinder shaft stops, the cam will still slide forward. When the cylinder shaft is retracted, the cam will shift backward under the friction of the claws, which causes a deviation in the alignment between the cam and the spindle, affecting the accuracy of the bobbin exchange when the yarn is dropped, especially when the equipment is lengthened, this deviation will increase. Summary of the invention

[0003] The invention provides a convex disc anti-slip device of a collective doffing spinning frame, which is used to solve the problem that the convex disc shifts forward due to inertia during operation and shifts backward due to friction when a support claw is retracted.

[0004] To solve the above problems, the technical solution of the present invention is: to provide a cam anti-slip device, the cam anti-slip device includes a cam, cam guide rails on both sides of the cam, and a cylinder is arranged under the cam, the cylinder output shaft is connected to the guide rod through a connecting block, a support claw is movably connected to the guide rod, a cam positioning groove is opened on the cam guide rail, a cam positioning plate is installed at the corresponding position, the cam positioning plate is fixed to the cam guide rail through a mounting plate, the cam positioning plate includes a front baffle and a rear baffle, the front and rear baffles are tangent to the oblique side surface of the cam, and the cam positioning plate is an elastic plate.

[0005] Compared with the prior art, the present invention has the following beneficial effects: the cam positioning is realized during the operation of the cam, and the phenomenon of the cam sliding forward due to inertia and the cam shifting backward due to the friction of the support claws is effectively prevented, the centering accuracy of the spindle and the empty bobbin is improved, and it is more conducive to the accuracy of the exchange of empty bobbin and full bobbin during collective yarn dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the convex disc conveying system; Figure 2 It is the schematic diagram of the AA section of the convex disc conveying system; Figure 3 It is a partial schematic diagram of the cam conveying system when the cylinder shaft is extended; Figure 4 It is a partial schematic diagram of the cam conveying system when the cylinder shaft is retracted; Figure 5 This is a partial enlarged view of positioning plate B; Figure 6 This is a front view diagram of the positioning plate installation; 1- cam, 2- cam guide rail, 3- cylinder, 4- cylinder output shaft, 5- guide rod, 6- support claw, 7- cam positioning groove, 8- cam positioning plate, 9- connecting block, 10- mounting plate. Specific implementation method: The technical solution of the present invention is: a cam anti-slip device for a collective yarn dropping spinning machine, the cam anti-slip device comprises a cam 1, cam guide rails 2 on both sides of the cam 1, a cylinder 3 is arranged below the cam 1, the cylinder output shaft 4 is connected to the guide rod 5 through a connecting block 9, a support claw 6 is movably connected to the guide rod 5, a cam positioning groove 7 is opened on the cam guide rail 2, a cam positioning plate 8 is installed at the corresponding position, the cam positioning plate 8 is fixed to the cam guide rail 2 through a mounting plate 10, the cam positioning plate 8 comprises a front baffle 8.1 and a rear baffle 8.2, the front and rear baffles are tangent to the oblique side surface of the cam, and the cam positioning plate 8 is an elastic plate.

Claims

1. A convex disc anti-slip device for a collective doffing spinning machine, the convex disc anti-slip device comprising a convex disc (1), convex disc guide rails (2) on both sides of the convex disc (1), a cylinder (3) arranged below the convex disc (1), a cylinder output shaft (4) connected to a guide rod (5) through a connecting block (9), and a support claw (6) movably connected to the guide rod (5), characterized in that: A cam positioning groove (7) is formed on the cam guide rail (2), and a cam positioning plate (8) is installed at a corresponding position. The cam positioning plate (8) is fixed to the cam guide rail (2) via a mounting plate (10). The cam positioning plate (8) comprises a front baffle plate (8.1) and a rear baffle plate (8.2). The front baffle plate (8.1) and the rear baffle plate (8.2) are tangent to the oblique side surface of the cam. The cam positioning plate (8) is an elastic plate.

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